Meaning gore coupled with the stupidest decisions that keep getting the characters killed, and complete disregard to the emotional torment these characters were supposed to have, seeing what they're seeing. It's like watching a bunch of strangers who call themselves family, and they keep getting more and more distant from each other as the movie carries on and they're watching each other get possessed.
Also the circumstances of finding the book and the incantations bringing the demon to life had a million to one likelihood of happening.
Lazy story telling honestly, just alot of random bloodshed. Horror for cheap thrills.